Answer
a). $245^{\circ}F$
b). $375^{\circ}F$
Work Step by Step
$F=1.8C+32$
a). When C=245, $F=1.8\times245+32=473$ which is greater than $245^{\circ}F$
b). When C=200, $F=1.8\times200+32=392$ which is greater than $375^{\circ}F$
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